Supreme Court of Texas May 1972 casesLing Co. Inc. v. Trinity Sav. Loan Ass'nRitch v. Tarrant County Hospital DistrictLeander Independent School District v. Cedar Park Water Supply Corp.Hayek v. Western Steel Co.Niemann v. StateHumble Oil Refining Co. v. CalvertBroussard v. Texaco Inc.Lokey v. Texas Methodist Foundation